| Lastra a Signa to Montemor-o-Novo | 1,061.51 mi (1,708.33 km) |
| Lastra a Signa to Montemor-o-Velho | 1,043.56 mi (1,679.45 km) |
| Lastra a Signa to Montijo | 1,093.83 mi (1,760.35 km) |
| Lastra a Signa to Mortagua | 1,015.00 mi (1,633.48 km) |
| Lastra a Signa to Moura | 1,040.48 mi (1,674.48 km) |
| Lastra a Signa to Murtosa | 1,028.15 mi (1,654.65 km) |
| Lastra a Signa to Nazare | 1,076.66 mi (1,732.72 km) |
| Lastra a Signa to Nelas | 994.08 mi (1,599.82 km) |
| Lastra a Signa to Obidos | 1,087.53 mi (1,750.21 km) |
| Lastra a Signa to Odemira | 1,115.32 mi (1,794.94 km) |
| Lastra a Signa to Odivelas | 1,104.39 mi (1,777.35 km) |
| Lastra a Signa to Oeiras | 1,114.19 mi (1,793.12 km) |
| Lastra a Signa to Olhao | 1,096.73 mi (1,765.02 km) |
| Lastra a Signa to Oliveira de Azemeis | 1,017.99 mi (1,638.29 km) |
| Lastra a Signa to Oliveira de Frades | 1,006.15 mi (1,619.25 km) |
